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Proceedings Paper

Optimizing wavefront sensing for extreme AO
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Paper Abstract

Extreme adaptive optics (XAO) systems are highly specialized systems to achieve very high Strehl numbers on comparatively small fields of view, e.g. for high-contrast applications like planet finding. We present a study of an XAO system using a pyramid wavefront sensor on telescopes of 8m aperture diameter and above. We used standard (CAOS) and custom numerical simulation tools to examine the influence of the number of basis functions in a modal correction model, the control loop frequency of the XAO system, and atmospheric conditions.

Paper Details

Date Published: 25 October 2004
PDF: 7 pages
Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); doi: 10.1117/12.550314
Show Author Affiliations
Rainer Koehler, Max-Planck-Institut fur Astronomie (Germany)
Stefan Hippler, Max-Planck-Institut fur Astronomie (Germany)
Markus Feldt, Max-Planck-Institut fur Astronomie (Germany)
Raffaele Gratton, INAF, Osservatorio Astronomico di Padova (Italy)
Daniel Gisler, ETH Zurich (Switzerland)
Remko Stuik, Leiden Univ. (Netherlands)
Jorge Lima, Univ. de Lisboa (Portugal)

Published in SPIE Proceedings Vol. 5490:
Advancements in Adaptive Optics
Domenico Bonaccini Calia; Brent L. Ellerbroek; Roberto Ragazzoni, Editor(s)

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